关键词: 穴盘育苗, 油菜种子, 播种, 育苗流水线, 正交试验

Abstract: In order to improve the efficiency of the seeding production line device for industrialized vegetable seedling, a vegetable seeding production line device integrating soil paving, soil covering, soil cleaning, hole pressing and seeding was designed. Firstly, the structure of the whole vegetable seeding production line device was designed, and then the key components such as soil paving device, soil cleaning device, hole pressing device, seeding device and hole tray transmission device were designed. Finally, the performance test of the prototype was carried out. For the trial prototype, taking rape seed as the test object, three factors such as the vacuum degree, the suction nozzle diameter and the suction nozzle hole type of seeding drum were selected for orthogonal test, and the range and variance analysis of the test results were carried out to obtain the optimal factor combination. The verification test was carried out under the combination of factors such as the vacuum degree of 7 kPa, the suction nozzle hole type of straight hole and the suction nozzle diameter of 1.0 mm. The results showed that the seeding qualified rate of the designed vegetable seeding production line device under different seeding efficiency was stable above 93%, the seeding rate was less than 3%, and the hole rate was less than 5%. The results showed that the sowing performance of the prototype could meet the requirements of precision sowing precision and efficiency of hole tray seedling raising in the design parameters.

Key words: plug seedling, rape seed, seeding, seedling production line, orthogonal test